The ban, imposed after the killing of Saudi journalist Jamal Khashoggi, has been criticised by European allies since it put a question mark over billions of euros of military orders, including a 10 billion pound ($13.27 billion) deal to sell 48 Eurofighter Typhoon jets to Riyadh that would be led by Britain's BAE Systems.
"The ban will be extended for a further six months to September 30," read an e-mailed statement by government spokesman Steffen Seibert. "Over this period no new export applications will be approved."
Khashoggi, a Washington Post columnist who wrote critically about Saudi Crown Prince M. bin Salman, was killed inside the Saudi Consulate in Istanbul on Oct. 2.
Turkey says he was killed by a team of 15 Saudis who strangled him at the mission, and media reports have said his body was cut up and dissolved in acid.
The Saudi government communications office did not immediately respond to a request for comment on the report.
After denying the killing for two weeks, Riyadh finally described it as a "rogue" operation and arrested a number of senior Saudi officials.
Khashoggi's body has still not been recovered.